The companion supports communication with primary-care, allergy and immunology, dermatology, pulmonary, pharmacy, nutrition, and school-health professionals. It can be brought to appointments to clarify recent changes, confirm instructions, compare priorities, and reduce the chance that important questions will be forgotten. Any goals, precautions, action thresholds, medications, exercises, equipment recommendations, dietary directions, or progression decisions recorded in the book should come from the appropriate qualified professional. When instructions differ, the reader should pause and ask the responsible clinician to clarify the current plan.